Beetle larva ?

Observation - Beetle larva ?. Description: Found during a children's Mini-beast bug hunt at Thatcham's Discovery Centre. It was found on the trunk of a tree near a lake. It's about 10mm long. I don't recall having seen anything like this before.

Found during a children's "Mini-beast bug hunt" at Thatcham's Discovery Centre. It was found on the trunk of a tree near a lake. It's about 10mm long. I don't recall having seen anything like this before.